
This does not quite answer the question
21cms x 28cms
Mixed media on found maths papers

Find these values of t
21cms x 28cms
Mixed media on found maths papers

half x + c = y
40cms x 25cms
Mixed media on found maths papers

Rotation Clockwise 90 Degrees
20cms x 26cms
Mixed media on found maths papers

There is an easier way
21cms x 28cms
Mixed media on found maths papers

z is a function of x and y
21cms x 28cms
Mixed media on found maths papers

x0.69
20cms x 26cms
Mixed media on found maths papers